Patents by Inventor Koichiro Eguchi

Koichiro Eguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7668027
    Abstract: In order to easily perform a timing test on a memory interface included in a semiconductor device so as to satisfy a restriction on latency, the present invention provides a semiconductor device with the memory interface including: a clock output terminal that outputs a clock signal associated with an operation of a memory connected to the memory interface; a command terminal that outputs a command signal associated with control of a state of the memory; a data terminal that exchanges a data signal with the memory; and a data strobe terminal that exchanges a data strobe signal for establishing the data signal. This semiconductor device includes a testing terminal that outputs in advance a signal for starting a test on the memory interface apart from the command signal.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: February 23, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Kengo Imagawa, Masami Makuuchi, Ritsuro Orihashi, Yoshiharu Ikeda, Koichiro Eguchi
  • Publication number: 20070047345
    Abstract: In order to easily perform a timing test on a memory interface included in a semiconductor device so as to satisfy a restriction on latency, the present invention provides a semiconductor device with the memory interface including: a clock output terminal that outputs a clock signal associated with an operation of a memory connected to the memory interface; a command terminal that outputs a command signal associated with control of a state of the memory; a data terminal that exchanges a data signal with the memory; and a data strobe terminal that exchanges a data strobe signal for establishing the data signal. This semiconductor device includes a testing terminal that outputs in advance a signal for starting a test on the memory interface apart from the command signal.
    Type: Application
    Filed: March 2, 2006
    Publication date: March 1, 2007
    Inventors: Kengo Imagawa, Masami Makuuchi, Ritsuro Orihashi, Yoshiharu Ikeda, Koichiro Eguchi